This study includes data on static state policy innovativeness scores
from the SPID data, version 1.2. 

Compiled on June 21, 2021 by Scott Lacombe (slacombe@smith.edu) and 
Frederick J. Boehmke (frederick-boehmke@uiowa.edu).

For information on the SPID source data from which these are derived, see
its study page at: https://doi.org/10.7910/DVN/CVYSR7.


INCLUDED:  

1 Stata data sets: 
 
  SPID_v1.2_static.dta 		Static state policy innovativness rate scores.
  
1 Stata do-file: 
 
  SPID_v1.2_static.do 		Commands to generate static rate scores.
  
1 README file: 
  
  SPID_v1.2_static-README.txt	Describes the included data and files.  

  
VARIABLES:

statenam        str14   %14s                  State Name
rate_1959_2017  float   %9.0g                 Static rate score, 1959-2017
rate_1912_1958  float   %9.0g                 Static rate score, 1912-1958
rate_1912_2017  float   %9.0g                 Static rate score, 1912-2017

  
NOTES:

1. These static rate scores represent the number of policies adopted by
each state divided by the number of state-year adoption opportunities. The
number of opportunities corresponds to the number of years since the policy
was first adopted by any state until the year of adoption (if adopted) or
the year of the last observed adoption by any state. 

2. Scores are generated for three time periods to include based on Arizona, 
Alaska and Hawaii's years of statehood. Each score only includes policies
that started diffusing during the interval.

3. These scores were calculated using the Stata program stpolinn.ado. For
more information visit http://fredboehmke.net/methods.html. To install in 
Stata, type the following at the command line and follow the options:

	net from http://myweb.uiowa.edu/fboehmke/stata/stpolinn

4. These scores were created from the SPID data using the commands documented 
in the included Stata do-file. They were run in Stata Version 14 for Windows. 
You will need to install stpolinn to run the file - see #3 above.
 

RELATED WORK:

Frederick J. Boehmke; Mark Brockway; Bruce Desmarais; Jeffrey J. Harden; Scott 
LaCombe; Fridolin Linder; Hanna Wallach, 2018, "State Policy Innovation and 
Diffusion (SPID) Database v1.2", https://doi.org/10.7910/DVN/CVYSR7, 
Harvard Dataverse, V4, UNF:6:thxLqNh8In+OoHGUN4vVew== .

Boehmke, Frederick J.; Mark Brockway; Bruce A. Desmarais; Jeffrey J. Harden; 
Scott LaCombe; Fridolin Linder; and Hanna Wallach. 2020. “SPID: A New 
Database for Inferring Public Policy Innovativeness and Diffusion Networks.” 
Policy Studies Journal 48(2): 517-545. doi: 10.1111/psj.12357.

Boehmke, Frederick J. and Paul Skinner. 2012. "State Policy Innovativeness 
Revisited." State Politics and Policy Quarterly 12 (3): 304-330.

